Pumping machinery.



M- T. CHAPMAN.

PUMPING MACHINERY.

APPLICATION FILED NOV. 22', 1912. 1,174,122. Patented Mar. 7,1916.

4 SHEETS-SHEET. I.

THE COLUMBIA PLANOGRAPH cO., WASHINGTON, D c

M. T. CHAPMAN.

PUMPING MACHINERY.

APPLICATION FILEP NOV- 22. 1912.

Patented M31. 7, 1916.

4 SHEETSSHEET 2.

511) "LEE 4 SHEETS-SHEET 3' Patented Mat. 7, 1916.

M. T. CHAPMAN.

PUMPING MACHINERY.

APPLICATION FILED NOV. 22. 1912.

61 5% jwefi 7 f f cww,

THE COLUMBlA PLANoaRAPH COHIWASHINGTON, D.

M. T. CHAPMAN.

PUMPING MACHINERY.

APPLICATION FILED Nov.22, 1912.

1, 174,122. Patented Mar. 7, 1916.

4 SHEETSSHEET 4.

STES ATN OFTCE.

MATTHEW T. CHAPMAN, 0F AURORA, ILLINOIS, ASSIGNOR TO THE AMERICAN WELL WORKS, OF AURORA, ILLINOIS, A COR?ORATION OF ILLINOIS.

PUMPING MACHINERY.

Specification of Letters Patent.

Patented Mar. '7, 1916.

To all whom it may concern:

Be it known that I, MATTHEW T. CHAP- MAN, a citizen of the United States, residing at Aurora, in the county of Kane, State of Illinois, have invented certain new and useful Improvements in Pumping Machinery, of which the following is a specification, reference being had to the accompanying drawings. 7

My invention relates to pumping machinery, designed for use in pumping water from deep wells, and has for its object to provide new and improved mechanism for operating a single or double-acting reciprocating pump. c

To this end, my inventi0n,'broadly con sidered. comprises improved rotary cam mechanism for reciprocating one or more plungers, and at the same time overcoming the tendency of the plunger or plunger-s to rotate; also the arrangement of such cam operating mechanism so that it operates in the case of a double-acting pump to secure a continuous or uninterrupted discharge of water; also the combination of such cam operating mechanism with lever mechanism interposed between the cam mechanism and the plunger rod or rods, for increasing the length of the stroke andthe efliciency of the pump.

In the accompanying drawings in which I have illustrated my invention as embodied in adouble-acting pump,-Figure 1 is a side elevation, certain parts being broken away; Fig. 2 is a horizontal section on line 22 of Fig. 1, the lower operating lever being removed; Fig. 3 is a plan view of the upper operating lever and some of the parts connected thereto; Fig. 4; is a vertical section on line 4c-'l of Fig. 2; Fig. 5 is a horizontal section on line 55 of Fig. 1; Fig. 6 is a vertical section on line 6-6 of Fig. 1 Fig. 7 is a vertical section on line 7-7 of Fig. 1; Fig. 8 is an elevation showing the swinging supports, or fulcra, of the operating levers; Fig. 9 is a detail, being a plan view of the bracewhich connects the guides for some of the operating parts; Fig. 10 is a detail, being a partial side elevation of the cams, illustrating the position of one of the cross-heads near theupper end of its stroke; Fig. 11 is a detail, being a partial side view of the rods which connect the 7 lower cross-head to the upper lever, showing the manner of securing said rods to the lower cross-head; and Fig. 12 is a'horizontal section on line 12--12 of Fig. 11.

Referring to the drawings,13 indicates a horizontal rotary member or support, which, as best shown in Fig. 4, is mounted on a series of anti-friction rollers 14, which travel in suitable ways provided in a baseplate 15, said base-plate being preferably mounted between the flanges of I-beams 16. The rotary member 13 is provided at its upper margin with an annular rack 17, which is engaged and driven by a beveled gear 18, mounted on a drive shaft 19, which may be driven in any suitable way. The rotary member 13 carries on its upper surface near its margin, an upwardly projectlng cam 20, the shape of which is best shown in Figs. 1 and 4:, in which it will be seen that said cam is provided with two diametrically-disposed ridges, or high points, and two diametrically-disposed troughs, or low points, all connected by inclinedsurfaces. The troughs, however, are not equally distant from the ridges, but considering the direction of rotation of the cam, lie somewhat farther from the approaching ridge than from the receding one, the purpose being to make the lifting incline somewhat longer than the lowering incline, in order to make the lifting strokes of the two plungers overlap slightly, as hereinafter described.

21 indicates a second rotary member or support which is annular in form and overlies the marginal portion of the lower member 13, as shown in Figs. 1 and 4. The member 21 is provided onits under side, near its margin, with an annular rack 22, which overlies the rack 17 and also engages the drive gear 18. Said member 21 is provided with a marginal flange 23, which runs between upper and lower rollers 2+l-25,

carried by brackets 26 at convenient interwith that of the cam 20, except that as said cam 27 is intended to rotatein an opposite direction to the cam 2Q, the long and short inclines are correspondingly disposed. The two cams are so set that their ridges, or high portions, are adapted to be brought into register by the rotation of said cams in opposite directions, and in like manner the troughs, or low portions thereof, arev also caused to register as said cams rotate.

rollers- 32-3'3, adapted to travel on. the

upper surfaces of the cams 20-27, as best shown in Figs. 1 and 4.

3 11 indicates an upper cross-head, which is also U shaped and is inverted over the lower cross-headBO, and isarranged at right angles therewith. cross-head is also pivotally mounted onthe shaft 31, andv carries inner and outer rollers 351736, respectively, which run on the. upper surface oi? the. cams 20':27, as shown in Figs. 1 and 1.

37 indicates an upper operating lever, which at one end is i-ulicrumed upon. a swinging. link or fulcrum 38-, pivoted at its lower end: upon. a shait 39, carried on thebase of the machine, as shown Figs. 1, 2 and 8. Saidlever is connected intermediatelv of its ends withthe. lower cross-head 30, by means oii connecting rods40.t1, which are secured to said cross-head by means of cars. 42- 43 and nuts 4A, asshown Figs. 11 and 12. Said connecting rods,- extend upward at opposite sides ot the cross-head 34 and are connected to. parallel; bars45. t6, as shown in Fig. 1, said bars being spaced apart toreceivei'ol lers 47, mounted on pivots. 48, carried by the upper lever 37,, at'opposite. sides 01% an elongated opening; or slot 49 in. said lever, as shown in. Figs.- 1 and 8. The purpose of thisarrangeinent is to permit the connection between, the. rods 4=:Oi1 and lever 37 tomove transversely to a slight extent, as: required; in the operation of; said levers.

50 indicates a lower Operating lever,

which is similar tothe lever 37. below which.

it is arranged. The lever 50! is fulcrumed at one end; on vertically-disposed: swinging links or iiulcra 51.52, as best shown in Figs. 1, 2 and 8,'which links are also'mounted on. the shaft 39. The lever. 50: is connected with the upper crossrhead- 345, asshown. in Figs, 1;, 5 and: 6;, bymeansof: rollers53-54, mounted on pivots 55-:56, at opposite sides ofi a centnal slot 517 'in said: lever,- said. rollers nesting upqn. a flange 5,84 1 the. upper sideof the cross-head 34, and running under an overlying plate 59, which is secured to the cross-head 84: by bolts 60, as best shown in Fig. 1. 61 indicates a. spacing block,

mounted on the shaft 31, between the crosshead at. and the plate 59 to properly space said parts and prevent binding of the rollers 5354.

62 indicates a brass bearing around the shaft 31.

. From the foregoing description it will be seen that the raising and lowering of the cross-heads 3O3 i will act to. swing the levers 37-60 up and down and at the same time will permit the connections I between said levers. and the cross-heads by which they are operated to move transversely to. a limited extent.

As shown in Fig. 7 indicates an inner plunger rod, which is connected with one of the plungers in the well, and 6% indicates a tubular plunger I rod through which the plunger rod 63 extends, the tubular plunger rod (5 1 bein connected with the other plungerin the well. The plunger rod 63 is. con nected by a swivel connection 65 with a cross-head 66, which slides. vertically on guide rods 671-68, supported on base plate 68 which overlies. the well, as best shown. in Fig. 7, said base-plate being preferably connected with the I-beams16. Said guide rods. are connected at their upper ends by a: curved brace 69, and are also connected by braces 70-71 with the upper end of the shaft The object of making the brace. 69 curved is to. allow the plunger rods tov be conveniently removed from the well. The cross-head 66 is connected with the outer end of the lever 37 so that as said lever swings upward and outward it reciprocates the inner plunger rod 63. In like manner the outer plunger rod 64. isv connected by a swivel connection. 72. with a cross-head 78, which also slides on the guide rods 67-68, and; is connected with the lower lever 50.

74. indicates the well-tube and 7,5 the dischargev outlettherefrom, as shown in Fig. 1.

The operation of thepumping mechanism is. as follows: Assuming. that the parts are in the position shown, in F ig. 1 and that the outer cam 27 is rotating in a clockwise direction, as indicated by the arrow onv said figure, and the inner cam 20 is rotating in the opposite direction. At this time the upper cross-head 34, with the lower lever 50 connected therewith, are at the upper end of their stroke, and the lower cross-head: 30, with the upper lever 37 connected therewith, will have moved a short distance upward, in the early part of their upward stroke. As soon. as thehighest POints. of the cams 20.27 pass. from under the rollers 35 36\ of. the upper cross-head, said crossrhead will: begin. to descend, carrying down. the lever 5. Q and. the lever-3'Zjwi1l continue its upward stroke owing to the fact that the rollers 32-33 of the lower crosshead are riding up on the long inclined surfaces of the oppositely moving cams 27, which surfaces are indicated for convenience by a, a in Fig. 1. The descending surfaces of said cams are indicated by b b in said figure. Owing to the fact that the descending inclines b b of the two cams are shorter than the ascending surfaces a a, the descending lever will reach the lower end of its stroke before the other lever reaches the upper end of its stroke, and consequently will start up again while the upwardly moving lever is still moving up. At such time, therefore, both plungers will be lifting, and therefore there will be no intermission in the upward flow of water, and consequently no shock or pounding. Furthermore, owing to the fact that the two cams act upon each pair of rollers at opposite sides of the axis thereof, the cross-head to which said rollers are connected will be lifted or lowered vertically, its rollers riding in the saddles formed by the coacting inclines of the cams, and there will be no substantial tendency of the cross-heads to rotate, since such inclines are moving toward or from each other at equal speeds and are equally inclined in opposite directions. The manner in which the two cams act on the rollers is illustrated I in Fig. 10, in which one of the rollers is shown as near the upper limit of its movement. If desired, the cross-heads may be feathered on the shaft 31 to further insure against any tendency on their part to rotate,

but that is not necessary.

So far as I am aware, I am the first in the art to provide oppositely rotating coacting cams for reciprocating the plunger or plungers of a single or of a double-acting pump in the manner described; moreover, I believe I am the first in the art to provide a rotary cam member for reciprocatinga plunger together with other rotary means adapted by its action to overcome the tendencv of the plunger and its connected parts to move with the rotating cam; and my claims are therefore to be construed accordingly.

That which I claim as my invention, and desire to secure by Letters Patent, is,-

1.. The combination of a reciprocatory plunger, operating means therefor, and a pair of cam-members adapted to be moved in opposite directions in engagement with said operating means, the cam action of one of said members being coincident with that of the other member.

2. The combination of a reciprocatory plunger, operating means therefor, and a pair of cam-members adapted when moved in opposite directions to cooperate to move said plunger through engagement with said opera-ting means, he rotary effect. of one of said-members upon said operating means being offset by the rotary effect of the other member thereon.

. 8. The combination of a reciprocatory plunger, operating means therefor, and a pair of cam members adapted when moved in opposite directions in engagement with said operating means to positively actuate the same.

4:. The combination plunger, operating means therefor, and a pair of cam members adapted when moved in opposite directions to cooperate to move said plunger through engagement with said operating means substantially perpendicularly relative to the plane ofmovement of said cam members.

5. The combination of a reciprocatory plunger, operating means therefor, and a pair'of rotary cam members adapted when moved in opposite directions to cooperate to move said plunger through engagement with said operating means substantially parallel with the axis of rotation of said came.

6. The combination of a plunger adapted to be reciprocated up and down, operating means therefor, and a pair. of cam members adapted when moved in opposite directions in engagement with said operating means to positively raise the same.

7 The combination of a plunger adapted to be reciprocated up and down, operating means therefor, and a pair of cam members adapted when moved in opposite directions in engagement with said operating means to positively raise the plunger and thereafter to positively lower the same. v

8. The combination of a reciprocatory plunger, operating means therefor, and a. pair of cam-members one adapted to revolve within the other, said cam-members being adapted when rotated in opposite directions to actuate said operating means to reciprocate said plunger. I

9. The combination of a reciprocatory plunger, opera-ting means therefor, and a pair of concentrically-arranged cam-members adapted when rotated in opposite directions to actuate said operating means to reciprocate said plunger.

10. The combination of a pair of rotary cam-members one adapted to revolve within the other, a reciprocatory plunger extending through said cam-members, and operating means for said plunger, said cam-members being adapted when rotated in opposite directions to'actuate said operating means to reciprocate said plunger.

,11. An actuating mechanism for a pump having a reciprocating plunger, comprising a plurality of rotating cams the adjacent portions of which in their rotation move in oposite directions, and reciprocating means plunger rod of thep pr. a

12,. An actuating mechanism for a pump having a pair or reciprocating plungers, comprising a plurality of double. rotating came the adjacent portions of which. their rotation move in opposite directions, reciprocating means actuated by said cams and connected respectively with the plunger rods of the. pump.

13. An actuating mechanism for reciprocating pump, comprising pair of rotatfaces and similar col-acting inclined lowering surfaces, and a cross-head actuated by said inclined surfaces. and connected with. the plunger rod of the pump for reciprocating the same.

1 5; Arr actuating mechanism for: reciprocating pumps having a plurality of plunger rods, comprising a pair of rotating cams the adjacent portions of which tl ieir rotation move in opposite directions having similar inclined lifting surfaces and similar clined lowering surfaces, and pairof crossheads disposed at right angles to. each other and actuated 'by said inclined surfaces, said cross-heads being connected respectively with the plunger rods of the pump.

1 6. An actuating mechanismfor reciprocating pumps having a plurality of plunger rods, comprising a pair of rotating cams the adjacent portions of which in their rotation move in opposite directions having similar inclined lifting surfaces and similar inclined lowering surfaces, said lowering inclined surfacesheing shorter than the lifting inclinedsurfaces, and a pair of cross-heads disposed at right angles to each other and actuated by said inclined surfaces, said cross-heads being connected respectively with the plunger rods of the pump.

17..A n actuating mechanism for pumps having a reciprocating plunger rod, comprising a pair of rotating cams the ad acent portions of which in their rotation move in opposite directions having co-acting lifting and lowering surfaces, a lever connected with the plunger rod of the pump, and means actuated by said cams for operating the said lever.

18. An actuating mechanism for pumps having a plurality of reciprocating plunger rods, comprising a pair of rotating cams the Y adjacent portions of" which in: their rotation.

move in opposite directions having co-acting lillitlllgi and lowering surfaces, a pair of levers; connected with sard plunger rods, and

means. actuated by said cams and connected With-v said levers: respectively for operating the same.

19. An actuating mechanism for pumps halving reciprocating plunger rods, co1nprising a pair of rotating cams the adjacent portions of which their rotation move in opposite directions having co-acting lifting and. lowering surfaces, the lifting surfaces being longer than the lowering surfaces, levers-z connected with said plunger rods, and means actuated by said cams and connected with said levers: for operating the same;

20. v a: pump, the combination of a plunger adapted to be reciprocated up and down, operating means connected therewith, a cam member adapted to engage said operating means for raising said plunger at intervals, and other means moving in the direction opposite to: that of the cam member adapted to prevent a: shiftingof'the operating means in the direction of movement of the cam. member; is

21; In a pump, the combination of. a plum ger adapted to be reciprocated up: and down, operating means connected therewith, a rotary calm member engaging said operating means and adapted by its rotation. to raise said plunger at intervals, and other means rotating-in the opposite direction adapted to prevent rotation of said operating means with said c am.

22'. In a pump, the combination of a plunger adapted to be reciprocated up and down,

operating means connected therewith, a r0- tary cam member engaging said operating means and! adapted by its rotation to raise said plunger at intervals, and other means engaging said operatingmeans and rotating in the opposite direction from that of the canr member and at the same axial speed of rotation adapted to overcome the tendency of the operating means and the plunger to rotate Willlr said cam,

actuating mechanism for pumps having a reciprocating plunger rod, a pair of oppositely rotating cams having cotip'erating' inclined lifting and" lowering surfaces, a cross-head actuated by said: cams, said cross head being connected with said lever for actuatiirgthe same. g 24. An actuating mechanism for pumps having reciprocating plunger rods, comprising a pair of oppositely rotating cams having coiiperating inclined lifting and lower- 111g surfaces, and a pair-of cross-heads disposed at right angles to each other and operated by said cams, said cross-heads being connected respectively with said levers for actuating the same.

An actuating mechanism for pumps having, reciprocating; plunger rods, oompris- Y ing a pair of oppositely rotating cams having co-acting inclined lifting and lowering surfaces, a pair of cross-heads operated by said cams, a pair of levers connected with said plunger'rods and with said cross-heads respectively, and swinging fulcra for said levers.

26. An actuating mechanism for pumps having reciprocating plunger rods, comprising upper and lower rotary members hav ing cams provided with cooperating inclined lifting and lowering surfaces, said members having oppositely disposed annular racks, a gear between and meshing with said racks for rotating said members in opposite directions, and a cross-bead operated by said cams, said cross-head being connected with said plunger rod.

27. An actuating mechanism for pumps having a reciprocating plunger rod, comprising upper and lower rotary members having cams provided with cooperating inclined lifting'and lowering surfaces, said members having oppositely disposed annu lar racks, a gear between and meshing with said racks for rotating said members in opposite directions, and cross-heads operated by said cams, said cross-heads being connected with said rod. 1

28. An actuating mechanism for pumps having reciprocating plunger rods, comprising a pair of oppositely rotating cams having co-acting inclined lifting and lowering surfaces, crossrheads operated by said cams, levers connected with said plunger rods respectively, and means connecting said crossheads respectively with said levers, said connecting means being movable transversely.

29. A pump comprising a plurality of pump rods, two rotary members, a cam having a plurality of lifting and lowering surfaces carried by each of said rotary members, means for rotating said rotary members so that their adjacent portions move in opposite directions, and connecting means connecting said rods with said cams for operating said rods for pumping purposes.

30. A pump comprlsing a plurality of pump rods, two horizontal rotary members, a vertically extended cam having a plurality of lifting and lowering surfaces carried by each of said members, means for rotating said rotary members so that their adjacent portions move in opposite directions, and a plurality of members adapted to ride on and between said cam surfaces and pump rods.

31. A pump comprising a plurality of pump rods, levers for operating said pump rods respectively, two rotary members mounted horizontally, a series of vertically extended cams carried by said rotary members, means for rotating said rotary members in opposite directions, and members connected with said levers respectively for operating the same, the latter members having anti-friction rollers adapted to ride on said cams.

32. A pump comprising a plurality of pump'rods, levers for operating said pump rods respectively, two rotary members mounted horizontally, a series of vertically extended cams carried by said rotary members, means for rotating said rotary members in opposite directions, and U-shaped members connected with said levers respectively for operating the same, the latter members having anti-friction rollers adapted to ride on said cams.

33. In a pump comprising-a plurality of pumping rods, and reciprocating means therefor consisting of two sets of cams rotating in opposite directions about a common axis.

34:. A pump comprising a plurality of pumping rods, reciprocating means consisting of two sets of oppositely rotating cams having concentrically positioned driving gears, and a pinion meshing with both of said gears and acting to drive one gear in one direction and the other in the other direction.

Witnesses: V

W. A. FURNNER, W. H. DE BUsK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

"Washington, D. G. 

